Rebel Fleet

The first book in the Rebel Fleet military sci-fi series by B. V. Larson

Once every thousand years, the star cluster in the Orion constellation completes one rotation. Those who rule there uphold an ancient tradition: at the end of each cycle, they train their fleets by shedding the blood of lesser creatures.
Now, the enemy fleets are approaching once more. In response, the Rebel Worlds gather their starships to face the terrible threat. And this time, humanity is called upon to stand by their side.
The last time Earth was considered, Vikings were raiding the coast of England in their longships. Today, we are slightly less primitive. Today, we are a legitimate target.
One man is chosen to command Earth's only ship in the Rebel Fleet. When war breaks out, Leo Blake must either win... or die.